06.03
2.4 MCI board extension slot variation (SW 11.00 and higher)
2-68
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
Please note the following points about the digital inputs:
–
Isolated from the board electronics
–
Connected to the same ground (GNDEXT)
Please note the following points about the digital outputs:
–
Isolated from the board electronics
–
Connected to the same ground (GND24EXT), as is their the external
24V power supply
The handwheels are not isolated from the board electronics.
S
In the case of differential handwheels, the following signals are used:
–
MPGx_A
–
MPGx_B
–
MPGx_XA
–
MPGx_XB
S
In the case of TTL handwheels, the following signals are used:
–
MPGx_A
–
MPGx_B
–
M
Notice
The optional power supply of the handwheels (P5) is electronically protected
with 2A. The maximum continuous load is 1A. Per handwheel 500mA.
Please note the following points about sensor probes:
–
The sensor probes are isolated among themselves and from all other
potential areas (board electronics, dig. inputs, dig. outputs, and
handwheels).
The sensor probes are isolated among themselves and from the board electron-
ics.
Digital inputs
Digital outputs
Handwheels
Sensor probes
Sensor probes
2 Hardware Descriptions
